U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Apparatus for cleaning chimney flues

Patent 4028769 Issued on June 14, 1977. Estimated Expiration Date: Icon_subject June 14, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

539391

1030733

2157493

Inventors

Application

No. 05/661803 filed on 02/26/1976

US Classes:

15/249.3Suspended by a taut member (e.g., wire, rope, chain, etc.)

Examiners

Primary: Roberts, Edward L.

Attorney, Agent or Firm

Abstract

An apparatus for cleaning chimney flues and the like having a pulley mounting structure which engages and is secured on the upper edge of a chimney flue together with a rope extending through the pulley with one end of said rope being operable from the ground level and the other end of the rope having a chimney cleaning device secured thereto. There are several embodiments of the mount for engaging the chimney flue as well as several embodiments for the chimney cleaning device. Basically the chimney cleaning device has an eyebolt secured to a metal plate with additional weights available when it is necessary to increase the over-all weight of said device. The metal plate is somewhat smaller than the inside dimensions of the flue and said metal plate has secured thereto a flexible plate which is slightly larger than the inside dimensions of the chimney flue. The flexible plate has means along the outer edges thereof for sweeping the inside of the chimney flue to remove creosote and carbon buildup therefrom. One such means consists of sawtooth edges along the outside edges of the flexible plate, another embodiment has metal plates secured along the outside edges with the flat portions of the plates being parallel to the flexible member, and another further embodiment has plates which are mounted with the flat portions of said plates perpendicular to the plane of the flexible member.

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